Me gusta hacer juegos de manos, pero tambi\u00e9n disfruto de los trucos autom\u00e1ticos. Hace poco encontr\u00e9 un peque\u00f1o folleto sobre el Principio PM, que utiliza dos cartas clave para localizar una carta elegida (El Principio PM de Michael Powers, 1990). La mayor\u00eda de los trucos con cartas clave pueden ser bastante obvios a menos que la carta clave se coloque correctamente. Pero en este principio, la colocaci\u00f3n de las cartas clave es totalmente invisible para el espectador, lo que crea una ubicaci\u00f3n imposible.<\/p>\n\n\n\n\n\n\n\n
The principle is also known as “relative key cards”. Alex Emsley has several routines (Buried Treasure I and Buried Treasure II) in volume 1 of his collected works. That book mentions that Martin Gardner included it in his 1956 book, Mathematics, Magic and Mystery (pp. 25-26). In addition, Darwin Ortiz has a sandwich effect in his lecture notes “at the table” that uses this principle. <\/p>\n\n\n\n
The effect I do is that the spectator cuts a third of the deck off and looks at the bottom card of the cards they cut. They then bury that third in the deck by cutting another third off and replacing the first cut cards onto the deck followed by the second third. This seems to completely lose the selection. I deal rapidly through the deck dealing the cards face up. After dealing through all the cards I look at the spectator and say “As I was dealing, one card seemed to me more important than the others, was your card the “, and I name their card.
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Here is how I perform the effect.<\/p>\n\n\n\n
Have the spectator shuffle the deck. Take the deck face up and spread it between your hands and cut a face card to the bottom. Then continue to spread the deck looking for the matching face card. For example if a black jack is on the bottom look for the other black jack. When you find it cull it to the top. These cards are your key cards.
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You now have your key cards on top and bottom. I use matching face cards because they are easier to remember. You could just memorize the top and bottom cards instead.<\/p>\n\n\n\n
Now you have to place the key cards at positions 1 and 27 from the top. Split the the deck at 26 and do a Faro check to confirm that you have exactly 26 cards in each hand. Now take the half with the key card on top and overhand shuffle onto the bottom half, running one card and shuffling off.<\/p>\n\n\n\n
Then double cut the bottom card of the deck to the top and you have set your key cards at positions 1 and 27.<\/p>\n\n\n\n
An alternative is to split at 26 and note the card located there. Now spread through the deck looking for its mate. If you find the mate in the bottom 26 cards simply cull it to the top. If it isn’t in the bottom 26, cull any of the bottom 26 cards and insert the culled card into the top 26 cards as you look for the mate. Then cull the mate to the top of the deck.<\/p>\n\n\n\n
Of course you could skip the spectator shuffling and simple have the deck preset with your key cards.<\/p>\n\n\n\n
Set the deck in front of your spectator and instruct him that you are going to turn away, and when you do they are to cut about a third of the deck off with their right hand and look at the card on the face of the cut off portion. Demonstrate this to them if you are unsure that they understand. Then tell them that with their other hand to cut of another third of the deck. Tell them to replace the first third cut and then the second third cut, in effect burying their selected card.<\/p>\n\n\n\n
When they have done this ask them to make sure the cards are squared up and then turn back.<\/p>\n\n\n\n
Reiterate that there is no way you could know what card they looked at, or where the card is located in the deck, or what cards are next to their card.<\/p>\n\n\n\n
Pick up the deck face down in your left hand and start dealing cards face up onto the table. As you deal count down from 26 until you see the first key card. For example, if the key card was the tenth card down, you would deal and count 26, 25, 24, 23, 22, 21, 20, 19, 18, 17 and the card dealt on the count of 17 is a key. Remember the last number (in this case 17) and continue to deal (without counting) until you see the second key card. Now starting with that key simply count to the number you remembered as you deal.<\/p>\n\n\n\n
When you reach the number (17 in this example) you have dealt the spectators card. Remember it and keep dealing until you have dealt all the cards.<\/p>\n\n\n\n
Look intently at your spectator and tell them that as you dealt the cards you sensed that their card was the…. and name their card.<\/p>\n\n\n\n
If you want to repeat the trick you can spot the 26th card again and cull its mate to the top as you pull out their card. Then replace their card either in the top half or the bottom half of the deck, whichever puts the 26th key to position 27.
<\/p>\n\n\n\n
Usually I dislike self working card tricks that involve a lot of dealing, but in this case you can deal rapidly once through the deck to accomplish the effect, which is seemingly impossible.
<\/p>\n\n\n\n
<\/p>","protected":false},"excerpt":{"rendered":"
I like doing sleight of hand, but I also enjoy self working tricks. I recently came across a small pamphlet on the PM Principle, which uses two key cards to locate a chosen card (The PM Principle by Michael Powers, 1990). Most key card tricks can be pretty obvious unless the placement of the key card is done well. But in this principle the placement of the key cards is totally invisible to the spectator creating an impossible location.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","_eb_attr":"","footnotes":""},"categories":[7,142],"tags":[],"class_list":["post-1168","post","type-post","status-publish","format-standard","hentry","category-magic","category-tricks"],"featured_image_src":null,"featured_image_src_square":null,"author_info":{"display_name":"Bob","author_link":"https:\/\/robertjwallace.com\/es\/author\/admin\/"},"_links":{"self":[{"href":"https:\/\/robertjwallace.com\/es\/wp-json\/wp\/v2\/posts\/1168","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/robertjwallace.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/robertjwallace.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/robertjwallace.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/robertjwallace.com\/es\/wp-json\/wp\/v2\/comments?post=1168"}],"version-history":[{"count":4,"href":"https:\/\/robertjwallace.com\/es\/wp-json\/wp\/v2\/posts\/1168\/revisions"}],"predecessor-version":[{"id":3140,"href":"https:\/\/robertjwallace.com\/es\/wp-json\/wp\/v2\/posts\/1168\/revisions\/3140"}],"wp:attachment":[{"href":"https:\/\/robertjwallace.com\/es\/wp-json\/wp\/v2\/media?parent=1168"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/robertjwallace.com\/es\/wp-json\/wp\/v2\/categories?post=1168"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/robertjwallace.com\/es\/wp-json\/wp\/v2\/tags?post=1168"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}